IM SO CONFUSED

Ok so I have been TTC for 3 months and this month I was due to get my period today...but Wednesday night I had some brown spotting, like I didn’t even need a pad kind of spotting, yesterday I thought I would get my period overnight but nothing was on my pad, then yesterday all day it was very little brown spotting and today is the same thing, I’ve had maybe two light tampons actually have *some* pinkish blood but other than that it keeps coming and going. This is highly unusual for me as I usually get *maybe* a little spotting at night then get it full blown (like heavy flow and big cramps) the next morning but I still don’t feel like its coming, a couple very minor cramps and on and off spotting and that’s it.... I ’ve tested yesterday and got a negative...any ideas? Maybe just a weird period?